Sahih Muslim, 6116

Amir b. Sa'd reported on the authority of his father that Allah's Messenger (ﷺ) said:The greatest sinner amongst the Muslims is one who asked about a thing (from Allah's Apostle) which had not been forbidden for the Muslims and it was forbidden for them because of his persistently asking about it

Rapporté par Amir b. Sa’d d’après son père رضي الله عنه : Le Messager d’Allah ﷺ a dit : « Le plus grand pécheur parmi les musulmans est celui qui pose une question au sujet d’une chose qui n’était pas interdite, et qui, à force d’insister, la voit interdite à cause de lui. »