Within the recommended rites on Fridays, Shaykh al-Tusi, in his book of Misbah al-Mutahajjid, has mentioned the following from Imam Hasan Askari (peace be upon him):
اَللَّهُمَّ صَلِّ عَلَىٰ مُحَمَّدِ بْنِ عَلِيٍّ
allahumma salli `ala muhammadi ibni `aliyyin
O Allah, (please) send blessings upon Muhammad the son of `Ali
بَاقِرِ ٱلْعِلْمِ وَإِمَامِ ٱلْهُدَىٰ
baqiri al`ilmi wa imami alhuda
the splitter of knowledge, the leader to true guidance,
وَقَائِدِ أَهْلِ ٱلتَّقْوَىٰ
wa qa'idi ahli alttaqwai
the chief of the people of piety,
وَٱلْمُنْتَجَبِ مِنْ عِبَادِكَ
walmuntajabi min `ibadika
and the superbly selected from among Your servants.