once
مَنْ أَطْعَمَهُ اللَّهُ الطَّعَامَ فَلْيَقُلْ: اللَّهُمَّ بَارِكْ لَنَا فِيهِ وَأَطْعِمْنَا خَيْراً مِنْهُ، وَمَنْ سَقَاهُ اللَّهُ لَبَناً فَلْيَقُلْ اللَّهُمَّ بَارِكْ لَنَا فِيهِ وَزِدْنَا مِنْهُ
Edition transliteration
Whomever Allah feeds, should say:(Allahumma barik lana feehi wa-atAAimna khayran minh.) and whomever Allah gives milk to drink should say:(Allahumma barik lana feehi wazidna minh.)
Meaning
Whomever Allah feeds, should say:(O Allah, bless it for us and feed us better than it.) and whomever Allah gives milk to drink should say:(O Allah, bless it for usand give us more of it.)
Source and references
Hisn al-Muslim, entry 179.The reference is copied from the edition; separate editorial verification is not complete yet.
Source edition: Fortress of the Muslim. Open source ↗