(45) باب هِجْرَةُ النَّبِيِّ صلى الله عليه وسلم وَأَصْحَابِهِ إِلَى الْمَدِينَةِ
Narrated 'Ata bin Abi Rabah:
`Ubaid bin `Umar Al-Laithi and I visited Aisha and asked her about the Hijra (i.e. migration), and she said, "Today there is no (Hijrah) emigration. A believer used to run away with his religion to Allah and His Apostle lest he should be put to trial because of his religion. Today Allah has made Islam triumphant, and today a believer can worship his Lord wherever he likes. But the deeds that are still rewardable (in place of emigration) are Jihad and good intentions." (See Hadith No. 42 Vol. 4).
Reference: Sahih al-Bukhari 3900
In-book reference: Book 63, Hadith 126
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 58, Hadith 240