Muwatta Malik 1841
موطأ مالك#1841Sahihحَدَّثَنِي مَالِكٌ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ أَبِي الْحُبَابِ، سَعِيدِ بْنِ يَسَارٍ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ تَصَدَّقَ بِصَدَقَةٍ مِنْ كَسْبٍ طَيِّبٍ - وَلاَ يَقْبَلُ اللَّهُ إِلاَّ طَيِّبًا - كَانَ إِنَّمَا يَضَعُهَا فِي كَفِّ الرَّحْمَنِ يُرَبِّيهَا كَمَا يُرَبِّي أَحَدُكُمْ فَلُوَّهُ أَوْ فَصِيلَهُ حَتَّى تَكُونَ مِثْلَ الْجَبَلِ " .
Malik related to me from Yahya ibn Said from Abu'l-Hubab Said ibn Yasar that the Messenger of Allah, may Allah bless him and grant him peace, said, "Whoever gives sadaqa from good earning - and Allah only accepts the good - it is as if he placed it in the palm of the Merciful to raise it, as one of you raises his foal or young camel until it is like the mountain
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 58:1