Mishkat al-Masabih
He reported God’s messenger as saying, “The most excellent sadaqa consists in your satisfying a hungry stomach.”* Baihaqi transmitted it in Shu’ab al-iman. * Literally “liver.”
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَفْضَلُ الصَّدَقَةِ أَنْ تُشْبِعَ كَبِدًا جَائِعًا» . رَوَاهُ الْبَيْهَقِيُّ فِي شُعَبِ الْإِيمَانِ
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