Virtues

Virtue of reciting Surah Dukhaan at night

Q: Sayyiduna Abu Hurayrah (radhiyallahu anhu) narrated that Allah's Messenger (sallallahu alaihi wasallam) said, "If anyone recites (the surah) Haa Meem ad-Dukhan in the night, then he will wake up in the morning with seventy thousand angels seeking forgiveness for Him." (Mishkat 2149) 

Now is this virtue for every night or specific to Friday night that is from Thursday Maghrib to the starting time of Fajar of Jumu'ah?

Virtues of reciting Surah Hashr

Q: Surah Hashr - The Messenger of Allah (sallallahu alaihi wasallam) said: Whoever recites Surah Hashr then none from among Paradise, Hell, Arsh (Allah’s Throne) Chair, Curtains, the seven Skies, the Seven earths, space, wind, birds, trees, mountains, Sun, Moon, and angels would miss seeking forgiveness for him and yearning for his safety. If that man dies that day or that night he would die a martyr. 

Is this authentic? Does one have to recite this Surah everyday to get this virtue?