Unpicking the concept of wasilah – can you visit shrines or ask people to pray for you?

O you who have believed, fear Allah and seek waseela the means to Him and strive in His cause that you may succeed. (5:35)   يَا أَيُّهَا الَّذِينَ آمَنُوا اتَّقُوا اللَّهَ وَابْتَغُوا...