A man is accompanying one of the female daa’iyahs, claiming to do good deeds
Question

I read an article by some writer in which he praised the wife of one of the senior daa’iyahs. He said that he was with her all the time because of their common interest in going to lawyers in an effort to secure the release of prisoners. During the days he spent with her he saw the strength of her personality, her eloquence, her good conduct and her wise speech which impressed him greatly. What does Islam have to say about this matter?
Praise be to Allah.If they were alone together (khulwah) at the time when both of them were adults, then he has to repent, because being alone with a non-mahram woman and accompanying her here and there is a haraam action which is not permitted, as it opens the door to fitnah (temptation). 
But if the man who accompanied her was a minor, so that there was no risk of fitnah, or if he was her mahram, or his accompanying her did not involve their being alone together, and she observed complete hijaab and so on, then he should state that clearly (to whoever he meets) so that he will not be accused. The Muslim should always ensure that his religious commitment and honour are above reproach. And Allah is the One Whose help we seek.