Stories of Faith by Rabbi Elimelech Biderman Shlit"a

Reb Sheroya Deblitsky Shlita came to the Chazon Ish zt'l and said that he wants to be matir neder, to annul a vow. There was another Yid in the room, speaking Torah with the Chazon Ish. The Chazon Ish said, "We're two. Go outside and bring in a third person." Soon, Reb Deblitsky returned with an unlearned person, whose religious standards were also poor. The Chazon Ish asked Reb Deblitsky to state the reason he wanted to annul the vow, and then they annulled the vow. When the unlearned man left the house, the Chazon Ish said, "Go outside and bring in someone else to be matir neder. This man wasn't kosher for the beis din." The Chazon Ish however didnt say this earlier, so as not to embarrass the man. Reb Deblitsky learned from this episode the middos ofthe Chazon Ish, and how cautious we must be not to hurt a fellow man.

A similar story happened with the Tchebiner Rav zt'l. At a hachnasas sefer Torah celebration, the owner of the sefer Torah honored the Tchebiner Rav to write a letter in the sefer Torah. The Tchebiner Rav said, "I'd rather appoint the sofer to be my shaliach to write a letter for me."
After the sofer wrote the letter, the baal habayis honored another person to write
a letter. This person followed the Tchebiner Rav's lead and he also appointed the sofer to write the letter for him. Everyone else in the room also had the sofer write the letters for them.
The Tchebiner Rav explained that he realized that one of the people who came to the hachnasas sefer Torah celebration was halachically unfit to write a letter in the sefer Torah. But if he were to say anything, that person would be embarrassed. So the Tchebiner Rav appointed the sofer his shaliach to write a letter, and this caused everyone present to do the same. The sefer Torah was written according to halachah without having to embarrass another Yid.

The Chofetz Chaim zt'l once picked up a piece of paper from the ground because he thought it was sheimos. As it turned out, it was just a scrap of paper. The Chofetz Chaim placed the paper in his pocket. Someone walking with the Chofetz Chaim asked him, "Why dont you just throw it to the ground? It isn't sheimos."
The Chofetz Chaim replied, "If I throw it down, the next Yid who passes by may
pick it up, thinking that it's sheimos. Why should I trouble him?"

Copied with permission from Machon Beer Emunah

Is it permissible to wear an oversized coat outside an eruv if it is the only coat available, or to protect ones feet from the rain?

It is generally not permissible to wear a coat on Shabbos that one would be
embarrassed to wear because of its size if it were not raining during the week,
(such as a coat that is too large), since Chazal were concerned that one will remove it. However, this type of coat is permitted to be worn on Shabbos in the rain, since there is no concern that one will remove it. One may not, however, wear it home from ones destination if it is no longer raining