Narrated `Abdullah Al-Muzni
The Prophet (ﷺ) said, "Pray before the Maghrib (compulsory) prayer." He (said it thrice) and in the third time, he said, "Whoever wants to offer it can do so." He said so because he did not like the people to take it as a tradition.
Narrated Marthad bin `Abdullah Al-Yazani
I went to `Uqba bin 'Amir Al-Juhani and said, "Is it not surprising that Abi Tamim offers two rak`at before the Maghrib prayer?" `Uqba said, "We used to do so in the lifetime of Allah's Messenger (ﷺ)." I asked him, "What prevents you from offering it now?" He replied, "Business."