Does Ibn al-Attar's statement, "And I do not know of any disagreement concerning this," convey a definitive or tacit consensus (ijma') regarding the kufr (disbelief) of one who delays the conversion of a disbeliever to Islam, and is this narration authentic?

The issue attributed to Ibn al-Attar is not a matter of consensus. Al-Nawawi, in Al-Majmu', stated that if a disbeliever desires Islam, he must hasten to it and not delay it for ritual bathing. Delaying it is strictly forbidden, and this is the view of the majority. Al-Nawawi also quoted the author of Al-Tatimma as saying that whoever delays presenting Islam to a disbeliever without an excuse becomes an apostate, but Al-Nawawi deemed this an exaggeration, stating that the correct view is that he has committed a grave sin.

Moreover, Ibn al-Attar's statement, "I know of no disagreement concerning it," does not indicate consensus. Al-Zarkashi, in Al-Bahr Al-Muhit, mentioned that a speaker's statement, "I know of no disagreement," is not considered a consensus by Al-Sayrafi and Ibn Hazm, due to the possibility of disagreement existing. Some scholars stipulated that the speaker must be among the learned who have extensively researched and fully grasped the consensus and disagreements for their statement to be considered an authoritative argument. The companions of Al-Mawardi differed on establishing consensus based on his statement. Ibn Hazm, however, considered this statement to be unsound.