I agree with brother Irtaza. When we can get clear greeting words from the holy Quran why do we need to invent other words to greet each other? I I don’t see any reason. Though it sounds minor issue, in this way people actually get bad habit and eventually look for other sources such as hadith to justify their acts or words. The holy Quran uses greetings words at many places and we should use those words whenever necessary without inventing or replacing by new ones. It makes our life simple. Salam.
Dr. Md. Anisur Rahman, MSc (RU, 1st class 1st), MSc (NUS), PhD (UK)