Answer
(Fatwa: 1670/1670/M=1433)
Recite the following verse after each salah as supplication:
رَبِّ لَا تَذَرْنِي فَرْداً وَأَنتَ خَيْرُ الْوَارِثِينَ.
Also take 40 cloves and recite the below mentioned verse 7 times on each clove and the woman should start eating one clove every day before going to bed from the day when she does the ghusl of menses. Also she should not drink water after eating the clove. The verse is as follows:
أَوْ كَظُلُمَاتٍ فِي بَحْرٍ لُّجِّيٍّ يَغْشَاهُ مَوْجٌ مِّن فَوْقِهِ مَوْجٌ مِّن فَوْقِهِ سَحَابٌ ظُلُمَاتٌ بَعْضُهَا فَوْقَ بَعْضٍ إِذَا أَخْرَجَ يَدَهُ لَمْ يَكَدْ يَرَاهَا وَمَن لَّمْ يَجْعَلِ اللَّهُ لَهُ نُوراً فَمَا لَهُ مِن نُّورٍ [النور : 40]
In-shaAllah, your wife shall conceive. (Bahishti Zewar)
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband