Maslama
Yes. Maslama is historically attested in early Islamic chronicles; a prominent bearer is Maslama ibn Abd al-Malik, an Umayyad prince and general.
Maslama stems from the Arabic root s-l-m and denotes safety, peace, or deliverance; it can be understood as 'one who is safe' or 'one who brings safety'.
No. The personal name Maslama does not appear as a proper name in the Quran; its meaning derives from the same root as words that do appear in Quranic Arabic.
Traditionally Maslama is a masculine name in classical Arabic usage. Feminine forms with related morphology exist but Maslama historically appears as male.
Yes. Maslama, being classical Arabic, is used in various Muslim communities including Bengali speakers who prefer classical Arabic names with clear semantic meanings.