Abbott-Smith Manual Greek Lexicon
Ἀσάφ (G760)
2 (KJV) Ἀσάφ , ὁ indecl. (Heb. אָסַף ), Asaph , an obvious error for Ἀσά , found in the best texts, and adopted by LTTr. and WH, R, mg.: Mt 1:7 , 8 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain