What is the meaning of the phrase "Ahyā Sharāhyā" and what is the ruling on the one who says it? Is saying it permissible? What is the ruling on sitting with a group that recites praises and litanies which they claim are from the Sunnah, and this phrase is among them, knowing with certainty that it is an innovation?

One must beware of exaggeration regarding shaykhs and righteous individuals, and avoid innovations (bid'ah) such as non-transmitted (un-athar-ed) dhikrs and communal dhikr in a single voice. Participation in these is not permissible except for giving advice. The phrase "Ahya Sharahya" means "The Ever-Living, The Self-Sustaining" (Al-Hayy Al-Qayyum), and it is a foreign (non-Arabic) word. It is permissible to use it as a name by way of translation, and to supplicate with it in a language other than Arabic for someone who does not master Arabic. However, it is better to use Arabic in acts of worship.