Allah SWT says:
إِنَّ اللَّهَ وَمَلَائِكَتَهُ يُصَلُّونَ عَلَى النَّبِيِّ ۚ يَا أَيُّهَا الَّذِينَ آمَنُوا صَلُّوا عَ لَيْهِ وَسَلِّمُوا تَسْلِيمًا (56)
It means:
"Indeed, Allah and His angels send blessings on the Prophet, O you who believe, bless you on the Prophet and send greetings to him."
(QS: Al-Ahdzab verse 56)
From Annas bin Maalik Radhiyallahu anhu he said Rasulullah Shallallahu alaihi Wasallam said:
مَن صلَّى عليَّ صلاةً واحدةً صلَّى اللَّهُ عليهِ عشرَ صلَواتٍ ، وحُطَّت عنهُ عشرُ خطيئاتٍ ، ورُفِعَ ت لَهُ عشرُ درجاتٍ
It means :
"Whoever among your people prays on you once, Allah will write down ten good deeds for him, remove from him ten bad things, exalt him by ten degrees, and return him another ten degrees."
(Reported by Ahmad)
Come together with us EARTH SKY SHOLAWAT TO THE GREAT PROPHET MUHAMMAD SHALLALLAHU ALAIHI WASALLAM
O Allah, سيدنا محمد وعلى آله وصحبه اجمعين