In plain words
Without gratitude there is no humanness at all.
Hanumān too said the very same. However many obstacles strike us in God's work, we must regard … as trifling. Taking Rāma's command, getting the leave of all the vānaras, at the sea … he bowed to Śrī Rāmacandra, climbed the mountain and flew over the sea. Along with the Name of Rāma, he leapt into Rāma's work as well. He had gone only a little way when a mountain came across his path. It was the mountain Maināka. Who is that mountain? Hanumān's father Vāyu, to protect the mountain, hurled it into the sea. All the mountains perished, but the mountain Maināka did not perish. So for that mountain Maināka: I have had no way to say gratitude to the father. Let me at least offer my gratitude to that father's son, it thought. Feeling that the chance had come, that mountain rose up. Folding both hands: O Hanumān! You are immersed in Rāma's work. Rest on me a while, for where in the sea could you find a place to rest? That is why I have come up from within; rest on my peak, eat good fruits, and after that go on your journey to Laṅkā, he said. Then Hanumān said, I have taken Rāma's command on my head. Until Rāma's work is finished I need neither peace nor rest. So let me go, he said. Rāma's work is what matters to me. I have no need of rest for my body. I have offered this body to Rāma. So once I have searched out Sītā, I will come back happily and rest with you, but now do not stand in the way of my work: so saying, he bowed. Then, You are immersed in Rāma's work, so I will put no obstacle in your way at all: so saying, the Maināka too bowed. I will not stand in the way of God's work in the least.
As he went on again, another one came, a rākṣasī named Siṃhikā. What did she say when she came? Coming up to him, with fair words: 'O Hanumān, today you must be my food'. Hanumān was not afraid at all. 'I have no objection at all to being used as your food. But one thing: I am on a journey, for Rāma's work. After searching out Sītā and handing her over to Rāma, I will come to her as food, he said. Let me go now, he said. Siṃhikā said: What is this? When I am hungry, instead of becoming my food you talk of seeing Sītā, then of taking this news back to Rāma, and by the time you come after that, how am I to … my hunger.