Asim bin Kulayb narrates from his father (Kulayb bin Shihab), from his grandfather (Sayyiduna Shihab bin Majnun, may Allah be pleased with him), that he said: I entered the mosque while the Messenger of Allah (peace and blessings be upon him) was seated in prayer (in the tashahhud). He (peace and blessings be upon him) had placed his right hand on his right thigh and was pointing with his index finger, and with his blessed tongue he (peace and blessings be upon him) was making this plea: 'Ya muqallib al-qulub, thabbit qalbi 'ala dinik' (O Turner of hearts, make my heart firm upon Your religion).
Abu Ya'la al-Mawsili recorded this hadith in his Musnad, and all the narrators of its chain are thiqat (trustworthy) and reliable, on which basis this report is sahih (authentic) and reliable.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / صفة الصلاة / 524
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف. » «أخرجه سنن الترمذي برقم: 3587، وأخرجه المعجم الكبير للطبراني برقم: 7232، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 1375»