:wasalam:
Fard are the compulsory rakahs you have to do in order for your salah to be valid (fajr: 2 fard, zuhr/dhur: 4 fard, asr: 4 fard, magreb: 3 fard, isha: 4 fard)
Fard and wajib are the same thing unless you are hanafi then wajib is close to fard but not the same.
The Hanafi Fiqh, however, makes a distinction between
Wajib and Fard, the latter being obligatory and the former merely necessary. According to the Hanafi Fiqh witr prayer is wajib.
see
https://www.islamweb.net/emainpage/index.php?page=showfatwa&Option=FatwaId&Id=88389
To we have to pray witr immediately after isha or we can pray it when we wake up for fajr ( but before fajr ) . I hope you can understand what I'm trying to say . If not , tell me and I'll try again cause my English is not that good .
Ibn Abbas narrated that the Prophet saw said, “You should perform salat layl even if it’s 1 rakaat.”
Witr is referred to as the night prayer (same as qiyam layl or thajjud). It's preferred to be prayed in the latest part of the night.
Ibn Abbas narrated that the Prophet saw said, “You should perform salat layl even if it’s 1 rakaat.”
Witr is a form of qiyamulayl. Aisha r.a. said that Prophet :saws1: prayed witr at various hours of the night from the beginning to the last hours of the night. Towards end of his life, he settled on last part of night.
Jabir narrated that the Prophet saw said,
“Whoever fears he will not wake up at night, let him pray before he sleeps, whoever hopes he will wake up, let him pray at the end of night because the recitation at the end of the night, that is the witnessed recitation of the angels {better time to recite and pray witr}
So the Prophet saw generally encouraged delaying witr if one is to wake up at night for qiyamulayl. Abu Qatadah narrated that Prophet saw was sitting with Abu Bakr and Umar and asked them each, “When do you pray witr? Abu Bakr said, “I pray it early on in the night” and Umar said, “I pray it at end of night.” So Prophet saw said to Abu Bakr “he took the safe way, “and he pointed to Umar and said, “This one took the path that requires great determination and strength.”