You should say “Subhânallâhi wa bi hamdihî” a hundred times every day and every night. There are many blessings in it. Also, it is necessary to say once every morning and once every evening the prayer, (Allâhumma mâ asbaha bî min ni’matin aw bi-ahadin min khalqika, fa minka wahdaka, lâ sharîka laka, fa laka-l-hamdu wa laka-sh-shukr) by substituting (mâ amsâ) for (mâ asbaha) in the evenings, which the Prophet has prescribed. Our Prophet stated: “He, who says this prayer during the day, will have offered the gratitude for that day. When he says it at night, he will have offered the gratitude for that night.” It is not necessary to have an ablution for saying it. You should say it every day and every night.
Endless Blıss First Fasicle | Page 186