“When you are greeted with a greeting, greet in return with what is better than it or at least return equally. Allah is Hasib (Reckoner) of all things.” (Suarh an-Nisa :86)
“Those who convey the Message of Allah and fear Him and none save Him, sufficient is Allah as Hasib (Reckoner)” (Surah al-Ahzab :39)
Allah, all praises and glory be to Him, is al-Hasib, the Reckoner and He is All-Knowing of His servants and their affairs. He is sufficient for those who put their trust in Him. He is the One Who recompenses His servants with either good or bad, based on His Knowledge and Wisdom. Allah is aware of the smallest details of all our actions and everything is taken into account. So next time someone says, ‘Assalamu Alaikum‘ to you, make sure you say, ‘Wa Alaikum Assalam wa Rahmatullahi wa Barakatahu‘ and see your reward increase.