This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionPBUH italicized 2400x2360x300dpi.png
English: This is a derivative work based on the Arabic Calligraphy for 'ṣallā llahu ʿalayhi wa sallam' (صلى الله عليه وسلم, SAW) an honorific which (in abbreviated form) commonly follows the name of Muhammad in Muslim Arabic texts. It has been enlarged for printing purposes, italicized in aspect (to match TNR Bold Italic), changed in color, and a drop shadow is added.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.