Hawzah News Agency – The merciful prophet of Islam, peace be upon him and his household says:

ارفَعوا أصواتَكُم بالصَّلاةِ علَيَّ؛ فإنّها تَذهَبُ بالنِّفاقِ.

'Raise your voices in invocation of blessings on me for it takes away hypocrisy.'

Source: al-Kafi, v. 2, p. 493, no. 13