Sheikh `Abd Allah al-Dumayjî
We praise and thank Allah for guiding you to Islam. We ask Him to strengthen you in faith and to guide your grandmother.
You should strive hard to convince her about Islam and to have her declare her faith that “There is no god but God and Muhammad is the Messenger of God.”
This is established by Prophet Muhammad (peace be upon him) in his own actions.
The Prophet (peace be upon him) visited the home of a Jewish man in Madinah whose son was on his deathbed. He invited the boy to accept Islam. The boy turned to his father, who said to him: “Listen to the father of al-Qâsîm.”
Then the boy said: “I bear witness that there is no god but God and that Muhammad is His servant and Messenger.”
Soon thereafter the boy died. The Prophet (peace be upon him) stood up and with happiness said: “Praise be to Allah who has saved him from the Fire.” [Sahîh al-Bukhârî (1356)]
On another occasion, the Prophet (peace be upon him) visited his uncle Abû Tâlib on his sickbed, while he was very near to death. He implored from him: “My uncle, say that there is no god but God. It is a statement that I can come to your defense with before Allah.”
At that time, Abû Jahl and `Abd Allah b. Abî Umayyah were in the room. They said to Abû Tâlib: “Would you desire to leave the religion of `Abd al-Mutalib?”
Abû Tâlib died at that point, declaring that he remained on the faith of `Abd al-Muttalib. [Sahîh al-Bukhârî (1360) and Sahîh Muslim (24)]
Therefore, you should follow the Prophet’s example and try very hard to convince your grandmother to accept Islam. It will be better for her as well as for you that she embraces Islam.
I ask Allah to guide her to the truth at your hands.
Source: Islam Today