Praise be to Allaah.
There is no saheeh hadeeth which singles out any day or night
of the week for praying qiyaam or offering naafil prayers. Everything that
has been narrated concerning that is false and is a fabrication against the
Messenger of Allaah (peace and blessings of Allaah be upon him), and it
is not permissible to narrate it, let alone act upon it. The one who acts
upon such false ahaadeeth is introducing an innovation into the religion
that is not a part of it, so he should beware of the wrath and punishment of
Allaah.
Shaykh al-Islam Ibn Taymiyah (may Allaah be pleased with him)
said in Majmoo’ al-Fataawa (23/134):
With regard to prayers on Sunday and Monday and other days of
the week – even though it is mentioned by some of those who wrote about
raqaa’iq (heart softeners) – there is no difference of opinion among the
scholars of hadeeth that all of these ahaadeeth are fabricated and none of
the imams regarded these prayers as mustahabb. In Saheeh Muslim it is
narrated from Abu Hurayrah (may Allaah be pleased with him) that the Prophet
(peace and blessings of Allaah be upon him) said: “Do not single out
the night before Friday for praying or the day of Friday for fasting.” And
Allaah knows best. End quote.
Ibn al-Qayyim aid in al-Manaar al-Muneef (95):
The ahaadeeth about praying on certain days or nights, such
as praying on Sunday or the night before Sunday, or on Monday or the night
before Monday, and other days of the week, are all false ahaadeeth. End
quote.
Al-‘Iraaqi (may Allaah have mercy on him) said in Takhreej
al-Ihya’ (1/259):
There is no saheeh hadeeth about the days or nights of the
week, all of the reports are da’eef (weak) and false. End quote.
Al-Shawkaani said in al-Fawaa’id al-Majmoo’ah (46):
It says in al-Mukhtasar: There is no saheeh report
about the prayers during the week. End quote.
There are verses and saheeh ahaadeeth which speak of the
virtue of praying qiyaam al-layl in general terms. Please see the answer to
question no. 50070.
And Allaah knows best.