بسم الله الرحمن الرحیم
899 – And Imam [Jafar Sadiq] peace be upon him said: Pray Friday prayers with their (Sunnis) Azan since they are extremely careful about the prayer timing.
Book: Man La Yahdarul Faqi – Sheikh SaduqPosted by 13S2010 Information about the authenticity of this narration by Hani (aka TripolySunni):
I checked the book “Jawahir al-Kalam” by their scholar al-Jawahiri, he says the narration is “Sahih” in volume 7 page 267:
ولقول الصادق (عليه السلام) في الصحيح (1): (صل الجمعة بأذان هؤلاء، فإنهم أشد شئ مواظبة على الوقت) وخبر محمد بن خالد القسري
Also it was authenticated in volume 1 of “Muntaqa al-Jaman” by Sheikh Hassan Sahib al-Ma’alim.
And they who carefully maintain their prayers – (9) Those are the inheritors (10) Who will inherit al-Firdaus. They will abide therein eternally. (11) [Surah Muminun 23]