It is said that this was an obscure hint to Sayyidina 'Uthmaan Radiyallahu 'Anhu and that is, although his wife, the daughter of Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam being very ill, that she passed away that same day, he was with one of his slave girls that night. Some 'ulama did not translate the word 'Lam Yuqaarif' as 'the one who did not commit sexual relations' but as 'the one who did not commit a sin'. Some 'ulama have translated it as 'did not speak' as Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam did not like to speak after 'eshaa. The most famous explanation is the one used above. There is no difficulty in explaining 'Ta'reed' (an obscure hint) too, a person does hint to one with whom one has a strong relationship. If Sayyidina 'Uthmaan Radiyallahu 'Anhu did this because of a strong urge, then there is no harm, also who knows when one will die. It is possible that Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam wanted to mildly bring it to his notice, but not scold him. It may not be surprising that the reason for this is that the marriage of Sayyiditina Ummi Kulthum Radiyallahu 'Anha was important, as this took place at the commandment of Allah Ta'aala. When the first wife of Sayyidina 'Uthmaan Radiyallahu 'Anhu, the elder sister of Siyyiditina Ummi Kulthum Radiyallahu 'Anha passed away, Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam said: 'if I had a hundred daughters, and if every one died one after another, I would have married each one of them one after the other to 'Uthmaan. 'Jibra-eel 'Alayhis Salaam says that Allah Ta'aala has commanded that I give the hand of Sayyidtina Ummi Kulthum Radiyallahu 'Anha in the marriage of Sayyidina 'Uthmaan Radiyallahu 'Anhu.' In this manner it will surely warrant that at the time of the illness of such a wife like Sayyiditina Ummi Kulthum Radiyallahu 'Anha, a mild and obscure hint be given. And Allah knows best.