فَٱنظُرْ إِلَىٰٓ ءَاثَـٰرِ رَحْمَتِ ٱللَّهِ كَيْفَ يُحْىِ ٱلْأَرْضَ بَعْدَ مَوْتِهَآ ۚ إِنَّ ذَٰلِكَ لَمُحْىِ ٱلْمَوْتَىٰ ۖ وَهُوَ عَلَىٰ كُلِّ شَىْءٍ قَدِيرٌ

When a man treads the path of Truth, he has frequently to face great difficulties, as happened with the Prophet and his companions in the early days. But, in that case, there was no question of anybody being disappointed. God is so merciful that, when a field under cultivation needs water, He moves the universal system and waters it. Naturally, He will certainly help those who tread His path. However, this help will be forthcoming only according to God’s plan. So, if there is some delay in the process, man should not be disappointed or disheartened. The word of God is very clear and reasonable. But only those who study things in depth, who listen carefully, whose nature it is to accept things that address their mind, who adopt the path which they find to be right, will repose their faith in the word of God.

— Source: Tazkirul Quran (Maulana Wahiduddin Khan) via Quran.com (30:50)