Waki said Ba’l means the agricultural crop which grows by the rain water. Ibn Al Aswad said and Yahya, that is, Ibn Adam said I asked Abu Iyas al Asadi (about this word ba’l). He replied What is watered by rain.
Hadith Referenceسنن ابي داود / كتاب الزكاة / 1598
Hadith Gradingالألبانی:صحيح مقطوع | زبیر علی زئی:إسناده صحيح