It was narrated that Safwan bin Umayyah said: "I said: 'O Messenger of Allah, they are saying that no one will enter Paradise except a Muhajir."' He said: "There is no more emigration (Hijrah) after the Conquest of Makkah, rather there is Jihad and intention. When you are called to moblize (for Jihad) then do so."
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنِي مُحَمَّدُ بْنُ دَاوُدَ، قَالَ حَدَّثَنَا مُعَلَّى بْنُ أَسَدٍ، قَالَ حَدَّثَنَا وُهَيْبُ بْنُ خَالِدٍ، عَنْ عَبْدِ اللَّهِ بْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنْ صَفْوَانَ بْنِ أُمَيَّةَ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ إِنَّهُمْ يَقُولُونَ إِنَّ الْجَنَّةَ لاَ يَدْخُلُهَا إِلاَّ مُهَاجِرٌ . قَالَ " لاَ هِجْرَةَ بَعْدَ فَتْحِ مَكَّةَ وَلَكِنْ جِهَادٌ وَنِيَّةٌ فَإِذَا اسْتُنْفِرْتُمْ فَانْفِرُوا " .
sunnah.com