ENOfficial
Abu Khizama said that his father asked God’s messenger, “Tell me whether invocations we invoke, medicine we apply and caution we practise can avert anything God has decreed.” He replied, “They are a part of God’s decree ’ Ahmad, Tirmidhi and Ibn Majah transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَن أبي خزامة عَن أَبِيه قَالَ سَأَلَتْ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقُلْتُ يَا رَسُولَ اللَّهِ أَرَأَيْتَ رُقًى نَسْتَرْقِيهَا وَدَوَاءً نَتَدَاوَى بِهِ وَتُقَاةً نَتَّقِيهَا هَلْ تَرُدُّ مِنْ قَدَرِ اللَّهِ شَيْئًا قَالَ: «هِيَ مِنْ قَدَرِ الله» . رَوَاهُ أَحْمد وَالتِّرْمِذِيّ وَابْن مَاجَه
sunnah.com