Reference: Fataawa Mu’aasirah – Page 383
Question: [What is your opinion] regarding the one who commissions a signpost [to be made] with the [words of] remembrance ‘laa ilaaha il-Allaah’ and ‘subhaa-nAllaah’ [on it], and then erects it on the Qaseem to Riyadh motorway?
Response: There is no harm in the signposts with [the words of remembrance] ‘سبحان الله’ and ‘الحمد لله’ and ‘الله أكبر’ – which have been erected on the motorways, because this is [done] from the aspect of reminding [others to do good].
