The word(s) "suitable" appears 12 time(s) in 12 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) O ye who believe! When ye are told to make room in the assemblies, (spread out and) make room: (ample) room will Allah provide for you. And when ye are told to rise up, rise up Allah will rise up, to (suitable) ranks (and degrees), those of you who believe and who have been granted (mystic) Knowledge. And Allah is well-acquainted with all ye do.

(12) Truly the rising by night is most potent for governing (the soul), and most suitable for (framing) the Word (of Prayer and Praise).