Quran 50:31

Surah Qaf, Verse 31:
وَأُزْلِفَتِ الْجَنَّةُ لِلْمُتَّقِينَ غَيْرَ بَعِيدٍ

And the Paradise will be brought near to the Muttaqun ( the pious),not far off. Surah Qaf, Verse 39:
فَاصْبِرْ عَلَىٰ مَا يَقُولُونَ وَسَبِّحْ بِحَمْدِ رَبِّكَ قَبْلَ طُلُوعِ الشَّمْسِ وَقَبْلَ الْغُرُوبِ

So bear patient of what they (O Muhammad صلى الله عليه وسلم ) all that they say, and glorify the praise of your Lord before the rising of the sun and before (its) setting (I.e.the Fajr, Zuhur,and 'Asr prayers). Surah Qaf, Verse 40:
وَمِنَ اللَّيْلِ فَسَبِّحْهُ وَأَدْبَارَ السُّجُودِ

And during a part of the night (also) glorify His praises (I.e. Maghrib and Isha prayers) and (so likewise) after the prayers.[As-Sunnah, Nawafil-optional and additional prayers. And also glorify,Praise and magnify Allah-Subhan Allah, Alhamdulilah, AllahuAkbar]. Reference: Sahih Bukhari (English),Volume 01,10. Times of the Prayer,Hadith 529:-

Narrated Qais:

Jarir said, "We were with the Prophet صلى الله عليه وسلم and he looked at the moon--full-moon--and said, 'Certainly you will see your Lord as you see this moon and you will have no trouble in seeing Him. So if you can avoid missing (through sleep or business, etc.) a prayer before the sunrise (Fajr) and a prayer before sunset (`Asr), you must do so.' He then recited Allah's Statement:

And celebrate the praises Of your Lord before the rising of the sun and before (its) setting." (50.39) Isma`il said, "Offer those prayers and do not miss them."