Last Hadith of Bukhari Shareef

Q: A person asked the question, in the final hadeeth of bukhaari it says "kalimataani habeebataani...", so he wants to know if there's any special reason and purpose why "two words" was mentioned, and not 1 or 3+ words? I was unable to give an answer, can Mufti shed some light on it?

Halaalah

Q: Respected mufti saheb this question is very urgent as the couple are about to engage in this action. Under what conditions is it permissible to engage in Halaala?