Muhammad ibn 'Amr ibn 'Abbad ibn Jabalah narrated to us, Muhammad ibn Abi 'Adi narrated to us — and (also) Muhammad ibn al-Muthanna narrated to me, Wahb ibn Jarir narrated to me — both of them from Shu'bah, from Qatadah, with this chain of transmission, a similar report, except that in the hadith of Shu'bah it says "then he exerted himself," and he did not say "even if he did not ejaculate."