وَإِذَآ And when wa-idhā was revealed unzilat a Surah sūratun that an believe āminū in Allah bil-lahi and strive wajāhidū with maʿa His Messenger rasūlihi ask your permission is'tadhanaka (the) men ulū (of) wealth l-ṭawli among them min'hum and said waqālū Leave us dharnā (to) be nakun with maʿa those who sit l-qāʿidīna
And when a sūrah was revealed [enjoining them] to believe in Allāh and to fight with His Messenger, those of wealth among them asked your permission [to stay back] and said, "Leave us to be with them who sit [at home]."
رَضُوا۟ They (were) satisfied raḍū to bi-an be yakūnū with maʿa those who stay behind l-khawālifi and were sealed waṭubiʿa [on] ʿalā their hearts qulūbihim so they fahum (do) not lā understand yafqahūna
They were satisfied to be with those who stay behind, and their hearts were sealed over, so they do not understand.