Hadithcore
Sunan Abi Dawud, 982
da’if· Al-Albani

Abu Hurairah reported the Prophet (ﷺ) as sayings:

if anyone would like to have the fullest measure granted to him when he invokes blessings on us, the members of the prophet’s family, he should say: O Allah, bless Muhammad, the unlettered Prophet, his wives who are the mother of the faithful, his off springs, and the people of his house as You didst bless the family of Abraham. You are indeed praiseworthy and glorious.

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حِبَّانُ بْنُ يَسَارٍ الْكِلاَبِيُّ، حَدَّثَنِي أَبُو مُطَرِّفٍ، عُبَيْدُ اللَّهِ بْنُ طَلْحَةَ بْنِ عُبَيْدِ اللَّهِ بْنِ كَرِيزٍ حَدَّثَنِي مُحَمَّدُ بْنُ عَلِيٍّ الْهَاشِمِيُّ، عَنِ الْمُجْمِرِ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏

‏ مَنْ سَرَّهُ أَنْ يَكْتَالَ بِالْمِكْيَالِ الأَوْفَى إِذَا صَلَّى عَلَيْنَا أَهْلَ الْبَيْتِ فَلْيَقُلِ اللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ النَّبِيِّ وَأَزْوَاجِهِ أُمَّهَاتِ الْمُؤْمِنِينَ وَذُرِّيَّتِهِ وَأَهْلِ بَيْتِهِ كَمَا صَلَّيْتَ عَلَى آلِ إِبْرَاهِيمَ إِنَّكَ حَمِيدٌ مَجِيدٌ ‏

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References2 variants
In-Book Reference
Book 2, Hadith 593
English Reference
Book 2, Hadith 977