Differing grades
Sunan Abu Dawud 2218
Abu Dawud said “I recited to Muhammad bin Wazir Al Misri and said to him Bishr bin Bakr narrated it to you and Al Auza’i narrated it to us. And he said “At’a narrated it to us on the authority of Aus brother of ‘Ubadah bin Al Samit. The Prophet (ﷺ) gave him fifteen sa’s of wheat to feed sixty poor…
أَعْطَاهُ خَمْسَةَ عَشَرَ صَاعًا مِنْ شَعِيرٍ إِطْعَامُ سِتِّينَ مِسْكِينًا