diff --git a/tampermonkey/sable-rtl.js b/tampermonkey/sable-rtl.js
new file mode 100644
index 0000000..587536a
--- /dev/null
+++ b/tampermonkey/sable-rtl.js
@@ -0,0 +1,139 @@
+
+// ==UserScript==
+// @name         Sable RTL
+// @author       Amir Aref
+// @version      0.1.0
+// @description  Fixes the direction of RTL languages in Sable Matrix Client
+// @match        https://cinny.khce.ir/*
+// @match        https://sable.khce.ir/*
+// @grant        none
+// ==/UserScript==
+
+
+// room meesages list timeline
+// <div class="RoomTimeline_messageList__1n936q93">
+
+
+; (function () {
+    "use strict";
+    const RTL_REGEX = /[\u0590-\u05FF\u0600-\u06FF\u0750-\u077F\u08A0-\u08FF\uFB50-\uFDFF\uFE70-\uFEFF]/;
+    const MESSAGE_LIST_SELECTORS = [
+        '[class*="RoomTimeline_messageList__"]'
+    ];
+    const MESSAGE_ITEM_SELECTORS = [
+        '[class*="RoomMessage_message"]',
+        '[class*="layout_MessageBase__"]'
+    ];
+
+    const styleId = 'sable-rtl-fix-style';
+    if (!document.getElementById(styleId)) {
+        const style = document.createElement('style');
+        style.id = styleId;
+        style.textContent = `
+            .sable-rtl-applied {
+                direction: rtl !important;
+                unicode-bidi: plaintext !important;
+                text-align: right !important;
+            }
+        `;
+        document.head.appendChild(style);
+    }
+
+    function matchesAnySelector(elem, selectors) {
+        if (!elem || !selectors.length) return false;
+        const combined = selectors.join(',');
+        return elem.matches(combined);
+    }
+
+    function closestSelector(elem, selectors) {
+        if (!elem || !selectors.length) return null;
+        const combined = selectors.join(',');
+        return elem.closest(combined);
+    }
+
+    function isInMessageList(elem) {
+        return Boolean(closestSelector(elem, MESSAGE_LIST_SELECTORS));
+    }
+
+    function applyRTLToElement(elem) {
+        if (!elem || elem.nodeType !== Node.ELEMENT_NODE) return;
+        if (elem.classList.contains('sable-rtl-applied')) return;
+        elem.classList.add('sable-rtl-applied');
+        elem.setAttribute('dir', 'auto');
+    }
+
+    function applyRTLToTextNode(textNode) {
+        if (!textNode || textNode.nodeType !== Node.TEXT_NODE) return;
+        const elem = textNode.parentElement;
+        if (!elem) return;
+        if (!isInMessageList(elem)) return;
+        const txt = textNode.textContent || "";
+        if (RTL_REGEX.test(txt)) {
+            const messageItem = closestSelector(elem, MESSAGE_ITEM_SELECTORS);
+            if (messageItem) applyRTLToElement(messageItem);
+            applyRTLToElement(elem);
+        }
+    }
+
+    function applyRTLToNode(node) {
+        if (!node) return;
+        if (node.nodeType === Node.TEXT_NODE) {
+            applyRTLToTextNode(node);
+            return;
+        }
+        if (node.nodeType !== Node.ELEMENT_NODE) return;
+        const elem = node;
+        if (!isInMessageList(elem)) return;
+        const walker = document.createTreeWalker(elem, NodeFilter.SHOW_TEXT, null, false);
+        let cur;
+        while ((cur = walker.nextNode())) {
+            applyRTLToTextNode(cur);
+        }
+    }
+
+    function initialScan(root) {
+        if (!root) root = document.body;
+        const messageLists = root.querySelectorAll(MESSAGE_LIST_SELECTORS.join(','));
+        if (!messageLists.length) return;
+        for (const list of messageLists) {
+            const walker = document.createTreeWalker(list, NodeFilter.SHOW_TEXT, null, false);
+            let cur;
+            while ((cur = walker.nextNode())) {
+                applyRTLToNode(cur);
+            }
+        }
+    }
+
+    initialScan(document.body);
+
+    const observer = new MutationObserver((mutations) => {
+        for (const mut of mutations) {
+            if (mut.type === 'childList') {
+                for (const nd of mut.addedNodes) {
+                    if (nd.nodeType === Node.ELEMENT_NODE) {
+                        const element = nd;
+                        if (matchesAnySelector(element, MESSAGE_LIST_SELECTORS)) {
+                            initialScan(element);
+                            continue;
+                        }
+                        if (isInMessageList(element)) {
+                            initialScan(element);
+                            applyRTLToNode(element);
+                        }
+                    } else {
+                        applyRTLToNode(nd);
+                    }
+                }
+            } else if (mut.type === 'characterData') {
+                applyRTLToNode(mut.target);
+            }
+        }
+    });
+
+    observer.observe(document.body, {
+        childList: true,
+        subtree: true,
+        characterData: true
+    });
+
+})();