Do not aim to pray when the sun is rising or setting

'A'isha reported that 'Umar misconstrued the fact that the Messenger of Allah (ﷺ) had prohibited the observance of prayer at the time of the rising sun and at the time of its setting. (Sahih Muslim Book 6, Hadith 359)

'A'isha said that the Messenger of Allah (ﷺ) did not abandon observing two rak'ahs after 'Asr, but she reported Allah's Messenger (ﷺ) as saying:

Do not get used to observe prayer at the time of the rising sun and at the time of its setting and (exhorted the Muslims) to pray at their times. (Sahih Muslim Book 6, Hadith 360)

How `Amr bin `Abasah became Muslim | Soltlane

 

Reference: The Book of Prayer - Travellers - Sunnah.com - Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم)