عَنْ تَمِيمٍ الدَّارِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مَنْ قَالَ لَا إِلَهَ إِلَّا اللَّهُ وَاحِدًا أَحَدًا صَمَدًا لَمْ يَتَّخِذْ صَاحِبَةً وَلَا وَلَدًا وَلَمْ يَكُنْ لَهُ كُفُوًا أَحَدٌ عَشْرَ مَرَّاتٍ كُتِبَتْ لَهُ أَرْبَعُونَ أَلْفَ حَسَنَةٍ
Narrated from Sayyiduna Tamim Dari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Whoever recites this supplication ten times: LAA ILAAHA ILLALLAHU WAAHIDAN AHADAN SAMADAN, LAM YATTAKHIDH SAHIBATAN WA LAA WALADAN, WA LAM YAKUN LAHU KUFUWAN AHAD. (There is no deity worthy of worship except Allah, He is One, Unique, Self-Sufficient, He has neither a wife nor a child, and there is none comparable to Him) forty thousand good deeds will be written for him.