It is also a great privilege to travel abroad and stay there for 12 or 25 months to attend Madanī Qāfilaĥs and to promote other Madanī activities of Dawat-e-Islami. However, if your parents get hurt and get into terrible trouble due to this travel of yours, then you must not travel. Promoting the working of Dawat-e-Islami around the globe is aimed at earning the pleasure of Allah عَزَّوَجَلَّ, not praises from people. And the pleasure of Allah عَزَّوَجَلَّ can never be attained by hurting the feelings of parents.
Furthermore, people intending to go to any other city or country to do any job or business should only travel after they have obtained consent from their parents. Also keep the following ruling in mind. It is stated on page 202 of Baĥār-e-Sharī’at, part 16 [the 312-page publication of Maktaba-tul-Madīnaĥ, the publishing department of Dawat-e-Islami]: If he (i.e. the son) is abroad, and the parents call him, [then] he must return to them. Writing a letter is not sufficient. Similarly, if parents need him to serve them, he must return and serve them.
صَلُّوۡا عَلَى الۡحَبِيۡب صَلَّى اللّٰهُ تَعَالٰى عَلٰى مُحَمَّد
Whenever your parents call you, do not delay in replying without a valid reason. مَـعَـاذَ الـلّٰـه عَزَّوَجَلَّ Some people are very negligent in this matter and do not even consider it something bad to delay in reply. Remember! Even if a person is offering Nafl Ṣalāĥ